CN101701135B

CN101701135B - Method for extracting vegetable tannin extract from dogberry kernels

Info

Publication number: CN101701135B
Application number: CN2009101726645A
Authority: CN
Inventors: 宋献忠; 宋献伟; 宋献宏; 刘辉
Original assignee: Ruanchuan Chuanguan Vegetable Tannin Extract Co Ltd
Current assignee: Ruanchuan Chuanguan Vegetable Tannin Extract Co Ltd
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2012-11-28
Anticipated expiration: 2029-11-13
Also published as: CN101701135A

Abstract

The invention discloses a method for extracting vegetable tannin extract from dogberry kernels, which is implemented by collecting and cleaning dogberry kernels, removing impurities, draining, squeezing with a pair of rollers for smashing, extracting vegetable tannin extract liquid by extraction technique and concentrating (wherein feed liquid ratio is 1:4-5, extraction temperature is no higher than 90 DEG C, concentration of concentrated solution is 18-20 baume degrees, and temperature is 60-70 DEG C), and spray drying to obtain the dogberry tannin extract. Due to adopting discarded dogberry kernels as the raw material in tannin extract production, the invention solves the increasingly grave shortage of tannin extract raw material, provides a new raw material for tannin extract production, re-develops and re-utilizes the discarded dogberry kernels, thus avoiding wasting resources, mitigating environment pollution, and effectively reducing cost of tannin extract. The extraction technique adopted in the invention can effectively extract active ingredient of tannin in dogberry kernels and retain the pale color thereof. the invention has simple technique, high practicability, high product quality, wide application, and high conversion rate, and develops a new tannin extract variety---dogberry tannin, which has good quality and low price.

Description

The method of extracting vegetable tannin extract from dogberry kernels

Technical field

The invention belongs to tannin extract extraction process technology field, what relate generally to is a kind of method of extracting vegetable tannin extract from dogberry kernels.

Background technology

Tannin extract (Vegeteble tannin extract) is that what from the vegetable raw material that is rich in tannin, to extract is the mixture that mainly contains the compound of effective constituent with tannin, is that seguin found in 1796 by its ability that can make rawhide become leather originally: so be called vegetable tanning agent or tannic acid.Because of the molecular weight of tannin extract is between the 500-3000, complex structure, chemical property is active, and high biological activity is arranged, and nowadays except that being used for process hides, also is used as oil drilling mud thinner and stifled agent in a large number, industrial gasses wet desulphurization agent, clean the boiler, scale inhibitor; Beneficiation inhibitor, water purifying agent, store battery cathode additive, corrosion inhibitor for metal etc.

At present; China can be used for producing the plant of tannin extract found have 300 surplus kind, and can support the only kind surplus in the of ten of utilization, and at this surplus ten in the kind; Bark of dahurian larch; Though hair Cortex Myricae Rubrae, black wattle plant skin, Ma Zhansong think bark, Cortex Phyllanthi, red skin, oak bark country and build these seeds energetically, cultivate total the fast of stripping that do not have, resource, vegetation face withered thirsty threat.Country is protection environment, vegetation, and the behavior that is similar to red bark of predatory development and use as pulling the grass up by its roots has in recent years stopped, and along with wildwood is prohibited implementing of cutting down, the northeast bark of dahurian larch has withdrawed from can support the market that tannin extract utilizes.Barks such as Guangxi, Yunnan its mao of governments limit red bayberry, Ma Zhansong think of adopt stripping, by original 1 year twice is defined as annually.The tannin extract raw material resources highlight in short supplyly like this, and the tannin extract price climbs up and up, and supply falls short of demand in tannin extract market, and in short supply day by day.Satisfy the tannin extract market supply and demand, it is crucial solving the tannin extract raw material sources.China natural resources is wide in variety, and the natural resource cost of gathering is high.Natural fruits, the shell class resource of at present having utilized with respect to demand, also an utterly inadequate amount with regard to output.This just suddenly waits to seek the new raw material resources of exploitation.

Skunk bush is extremely well-known Chinese medicinal materials, concentrates to be distributed in provinces such as China Henan, Shan, Hubei Province, Zhejiang, and YO reaches more than the thousands of tons of, slough medicinal pulp, pericarp after, can produce the fruit stone of number every year, and these fruit stones are abandoned as refuse entirely at present with kiloton.Year after year, not only a large amount of wastings of resources are fallen, and also environment have been caused pollution simultaneously.Can become " giving up " and be precious, to these with the time the ready-made cheapness of all coming material utilize, make growth of agricultural efficiency, increasing peasant income realize the continuing of resource, comprehensive utilization, service economy is protected environment, reason of the present invention that Here it is.

Summary of the invention

The objective of the invention is to propose a kind of method of utilizing extracting vegetable tannin extract from dogberry kernels; Solved tannin extract raw material problem in short supply day by day, a kind of raw material of new production tannin extract both was provided, made depleted skunk bush fruit stone obtain development and use again; Avoided the wasting of resources; Reduce environmental pollution, reduced the production cost of tannin extract simultaneously, guaranteed the quality product of tannin extract.

The present invention realizes that the technical scheme that above-mentioned purpose is taked is: the skunk bush fruit stone is collected cleaning, impurity elimination, draining, use the pair roller attrition crushing, adopt extracting technology to extract tannin extract, spraying drying promptly makes the skunk bush tannin extract.

Adopt extracting technology to can be a traditional jar group adverse current vat liquor and concentrate, solid-liquid ratio is 1: 4～5, and it extracts temperature≤90 ℃, and liquid concentrator should be at the 18-20 degree Beaume, temperature 60-70 ℃.

Adopt extracting technology also to can be known hot reflux extracting-concentration machine group, single jar of disposable complete vat liquor concentrates, and solid-liquid ratio is 1: 4～5, and it extracts temperature≤90 ℃, and liquid contracts liquid should be at the 18-20 degree Beaume, 60-70 ℃ of temperature.

In extracting solution, can add the sulphite of total extraction thing (total solids) 5%, can improve its solubleness, strengthen perviousness.

The present invention is owing to adopt depleted skunk bush fruit stone as the raw material of producing tannin extract; Not only solved tannin extract raw material problem in short supply day by day; A kind of raw material of new production tannin extract both was provided, has made depleted skunk bush fruit stone obtain development and use again, avoided the wasting of resources; Reduce environmental pollution, and effectively reduced the production cost of tannin extract.The raw material extracting technology that the present invention adopts can effectively extract the effective ingredient of tannin in the skunk bush fruit stone, and can keep its more shallow color and luster.Production technique of the present invention is simple and practical, and product quality is high, purposes is wide, transformation efficiency is high, has really developed a kind of inexpensive tannin extract new variety---skunk bush tannin extract.

Description of drawings

Accompanying drawing is a process flow sheet of the present invention.

Embodiment

To combine accompanying drawing that embodiments of the invention are further specified below:

As shown in the figure, the skunk bush fruit stone removed the silt impurity draining with the clear water rinsing after, use in flakes and make its 100% failure by rupture the extruding of rod machine.For ease of the storage of plant material and extract content, cost keeping, raw material is a natural air drying usually, and water ratio is generally in 12%.Evidence, raw material must be broken fully, otherwise 24 hours no tannin extracts of lixiviate leach in 90 ℃ of water.Because of impossible over dry (moisture) of skunk bush fruit stone and kernel oil-containing, be prone to be bonded to piece during with other method fragmentation when broken, efficient is very low.Have only and use rod machine extruding ideally, extruding can not only make the weave construction of skunk bush fruit stone break, and strengthens water-permeable, is beneficial to lixiviate, and has shortened extraction time and reduced extraction temperature, has effectively improved extracting efficiency and quality product.

Raw material lixiviate after the fragmentation can be selected the hot reflux extracting-concentration machine group for use according to industrial scale, and single jar of disposable the extraction fully concentrates.The new technology that thickener (unit) is Chinese medicine circle release is in recent years extracted in thermal backflow, is nonstandard product, and its principle is to extract and concentrated one; Part solution entering thickener concentrates when extracting; The secondary steam that thickener produces, a part of refluxing extraction jar is as thermal source, and another part becomes water of condensation through condensing surface; Be back to the so back and forth circulation of formation solvent → solution → solvent of extractor; Make solvent keep the high-gradient concentration difference with solute all the time, make the stripping of solute high speed, improved extraction yield.This method has been saved when jar is organized lixiviate in the common tannin extract production, and manpower, electric power have been saved in numerous and diverse work of falling liquid.But with regard to equipment manufacturing cost, the scale operation aspect, a jar group still has its advantage, quality product aspect indifference, the extraction yield aspect, thermal backflow technology in theory can reach 100%.The general water that adopts is made solvent, is best with soft water, and solid-liquid ratio is 1: 4～5, and it extracts temperature≤90 ℃, adopts negative pressure to concentrate the light yellow true qualities that kept the skunk bush tannin extract, and is very favourable to process hides.As process hides glue the time, in extracting solution, can add the sulphite of total extraction thing (total solids) 5%, can improve its solubleness, strengthen perviousness.No matter be single jar of disposable extraction of thermal backflow or jar group adverse current extracted many times, liquid contracts liquid all should be at the 18-20 degree Beaume, and 70 ℃ of temperature (6.9 groups of grams of 1 degree Beaume ≈=0.24% gram) just are beneficial to spraying drying.So just can make powdery skunk bush tannin extract, its tannin content is more than 63%.

Raw material lixiviate after the fragmentation also can adopt traditional jar group adverse current vat liquor to concentrate, and generally adopts water to make solvent; With soft water is best, and solid-liquid ratio is 1: 4～5, and it extracts temperature≤90 ℃; Adopt negative pressure to concentrate again so kept the light yellow true qualities of skunk bush tannin extract, very favourable to process hides.As process hides glue the time, in extracting solution, can add the sulphite of total extraction thing (total solids) 5%, can improve its solubleness, strengthen perviousness.No matter be single jar of disposable extraction of thermal backflow or jar group adverse current extracted many times, liquid contracts liquid all should be at the 18-20 degree Beaume, and 70 ℃ of temperature (6.9 groups of grams of 1 degree Beaume ≈=0.24% gram) just are beneficial to spraying drying.So just can make powdery skunk bush tannin extract, its tannin content is more than 63%.

Claims

1. the method for an extracting vegetable tannin extract from dogberry kernels is characterized in that: the skunk bush fruit stone is collected cleaning, impurity elimination, draining, use the pair roller attrition crushing; Adopting extracting technology to extract tannin extract liquid concentrates; The ratio of cornel fruit nuclear raw material and water solvent is 1: 4～5, and it extracts temperature≤90 ℃, and liquid concentrator is at the 18-20 degree Beaume; Temperature 60-70 ℃, spraying drying promptly makes the skunk bush tannin extract.

2. the method for extracting vegetable tannin extract from dogberry kernels according to claim 1 is characterized in that: described extracting technology is a jar group adverse current lixiviate.

3. the method for extracting vegetable tannin extract from dogberry kernels according to claim 1, it is characterized in that: described extracting technology is the hot reflux extracting-concentration machine group.